Researchers in Japan have finally observed living larvae of a sea lily, a marine invertebrate with a 500-million-year fossil record. The finding supports a century-old hypothesis about how the ...

A hallmark feature of echinoderm larvae is the development of the left anterior coelom. This coelom, called the axohydrocoel, consists of the morphologically distinct, but undivided, left axocoel and ...

IN NATURE of December 8 there appears an article by my friend Dr. F. A. Bather entitled “Echinoderm Larvæ and their Bearing on Classification.” The article consists of a review of Dr. Mortensen's work ...

How the echinoderm larval skeleton is used for support of larval arms, passive orientation, and swimming was examined by experimentally removing the skeletons of plutei and by comparing feeding larvae ...

Life began on earth more than 3.5 billion years ago, but the history of humans and other vertebrates accounts for only a fraction of this timescale. Chordates (a group that includes vertebrates) and ...

CC0 Usage Conditions ApplyClick for more information. A gallery of sea urchin and starfish larvae collected from Bocas del Toro. Most marine invertebrates, including sea urchins and starfish, have a ...

PROF. MORTENSEN'S “Studies of the Larval Forms of Echinoderms”, reviewed in Nature for Dec. 8, 1921, is well known. He has now issued two sets of additional notes, * one resulting from a visit to ...

Many animals have cunning ways of hiding from predators. But the larva of the sand dollar takes that to an extreme - it avoids being spotted by splitting itself into two identical clones. Sand dollars ...

WOODS HOLE, Mass. -- Scientists have a handful of standard research organisms, including fruit flies and mice, that they use to study the evolutionary development (evo-devo) of animal lineages over ...

Echinoderm larvae showed no adverse effects when exposed to water that was relatively high in CO2 Sea urchins are likely to be able to adapt to increasingly acidic oceans resulting from climate change ...

Sea urchins are likely to be able to adapt to increasingly acidic oceans resulting from climate change, according to new research. When the animals, known as echinoderms, were exposed to water high in ...